CAIRN Energy is stepping up exploration activity off Senegal after its latest well underlined the potential of a find made off the West African country.

The Edinburgh-based oil and gas firm announced plans to drill an exploration well which analysts had not expected. It will test a prospect Cairn reckons could contain around 100 million barrels oil.

The decision to drill underlines Cairn’s belief in the potential of its Senegal acreage, on which the company made two big finds in quick succession in 2014.

The well will also conduct further appraisal work on one of the finds made by Cairn in 2014, SNE, which the company has said may have been the largest oil discovery made anywhere in the world that year.

Cairn reckons SNE could contain up to around 900 million barrels recoverable oil.

The company said the results of the latest appraisal well drilled on the find, SNE 5, were in line with expectations. The well encountered oil in the areas targeted and flowed at up to 4,500 barrels oil daily.

Cairn said the well was drilled ahead of schedule and under budget.

Chief executive Simon Thomson has noted Cairn’s strong balance sheet has allowed it to capitalise on the fall in the cost of support services seen amid the downturn triggered by the crude price plunge.

Analysts at Barclays said the initial result from the SNE 5 well was unlikely to impact Cairn shares. It was more significant that Cairn and partners had decided to drill an exploration target ahead of the SNE-6 appraisal well.

Cairn Energy shares closed up 6.7p at 224.2p.

The company will announce its annual results today.